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X-Ray and Gamma-Ray Observations of the Fermi Bubbles and NPS/Loop I Structures
2018
Galaxies
The Fermi bubbles were possibly created by large injections of energy into the Galactic Center (GC), either by an active galactic nucleus (AGN) or by nuclear starburst more than ~10 Myr ago. However, the origin of the diffuse gamma-ray emission associated with Loop I, a radio continuum loop spanning across 100 deg on the sky, is still being debated. The northern-most part of Loop I, known as the North Polar Spur (NPS), is the brightest arm and is even clearly visible in the ROSAT X-ray sky map.
doi:10.3390/galaxies6010027
fatcat:aakeud7pwjfibnaizugzl34wk4